US7514445B2 - Heteroaryl amines as glycogen synthase kinase 3β inhibitors (GSK3 inhibitors) - Google Patents

Heteroaryl amines as glycogen synthase kinase 3β inhibitors (GSK3 inhibitors) Download PDF

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US7514445B2
US7514445B2 US10/493,452 US49345204A US7514445B2 US 7514445 B2 US7514445 B2 US 7514445B2 US 49345204 A US49345204 A US 49345204A US 7514445 B2 US7514445 B2 US 7514445B2
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alkyl
monocyclic
bicyclic
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heterocycle
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US20050004125A1 (en
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Eddy Jean Edgard Freyne
Peter Jacobus Johannes Antonius Buijnsters
Marc Willems
Werner Constant Johan Embrechts
Christopher John Love
Paul Adriaan Jan Janssen
Paulus Joannes Lewi
Jan Heeres
Marc René De Jonge
Lucien Maria Henricus Koymans
Hendrik Maarten Vinkers
Koen Jeanne Alfons Van Aken
Gaston Stanislas Marcella Diels
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Janssen Pharmaceutica NV
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    • C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
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    • C07D401/04—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings directly linked by a ring-member-to-ring-member bond
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    • C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
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Definitions

  • the present invention concerns a novel group of heterocyclic derivatives, their use as a medicine, their use for the manufacture of a medicament for the treatment of diseases mediated through glycogen synthase kinase 3; processes for their preparation and pharmaceutical compositions comprising them.
  • WO 01/72745 describes 2-substituted 4-heteroaryl-pyrimidines useful in the treatment of proliferative disorders.
  • WO 98/41512 relates to substituted 2-anilinopyrimidines useful as protein kinase inhibitors.
  • WO 95/09851 describes pyrimidineamine derivatives useful in the treatment of tumour diseases.
  • WO 01/12621 describes inhibitors of c-JUN-N-terminal kinases and other protein kinases.
  • WO 01/60816 describes pyrimidine derivatives useful as kinase inhibitors.
  • WO 97/19065 discloses substituted 2-anilinopyrimidines useful as p56 lck , p59 fyn , ZAP-70 and protein kinase C inhibitors.
  • WO 91/18887 discloses diaminopyrimidine compounds as inhibitors of gastric acid secretion.
  • WO 99/50250 concerns HIV inhibiting aminopyrimidine derivatives.
  • U.S. Pat. No. 5,516,775 concerns the use of 2-anilinopyrimidines as protein kinase C inhibitors.
  • WO 95/09853 describes N-phenyl-2-pyrimidineamine derivatives for the treatment of tumor diseases.
  • WO 98/18782 concerns 2-pyrimidineamine derivatives as selective protein tyrosine kinase inhibitors.
  • EP 0,337,943 discloses N-phenyl-N-pyrimidin-2-yl derivatives having herbicidal plant growth regulating activity.
  • EP 0,164,204 concerns 2-aminopyrimidines which augment the immune respons.
  • EP 0,233,461 relates to 4,5,6-substituted 2-pyrimidineamines having anti-asthmatic activity.
  • WO 00/62778 describes cyclic protein tyrosine kinase inhibitors.
  • the present invention relates to compounds which are distinguishable from the prior art in structure, pharmacological activity, potency or selectivity.
  • the present invention concerns a compound of formula (I)
  • ring A is pyridyl, pyrimidinyl, pyrazinyl or pyridazinyl;
  • the present invention also relates to the use of a compound for the manufacture of a medicament for the prevention or the treatment of diseases mediated through GSK3, said compound being a compound of formula (I′)
  • ring A is pyridyl, pyrimidinyl, pyrazinyl or pyridazinyl;
  • C 1-3 alkyl as a group or part of a group defines straight or branched chain saturated hydrocarbon radicals having from 1 to 3 carbon atoms such as methyl, ethyl, propyl, 1-methylethyl;
  • C 1-4 alkyl as a group or part of a group defines straight or branched chain saturated hydrocarbon radicals having from 1 to 4 carbon atoms such as the groups defined for C 1-3 alkyl and butyl;
  • C 1-6 alkyl as a group or part of a group defines straight or branched chain saturated hydrocarbon radicals having from 1 to 6 carbon atoms such as the groups defined for C 1-4 alkyl and pentyl, hexyl, 2-methylbutyl and the like;
  • C 1-10 alkyl as a group or part of a group defines straight or branched chain saturated hydrocarbon radicals having from 1 to 10 carbon atoms such as the groups defined for C 1-6 alkyl and heptyl, octyl, nony
  • a monocyclic, bicyclic or tricyclic saturated heterocycle represents a ring system consisting of 1, 2 or 3 rings and comprising at least one heteroatom selected from O, N or S, said ring system containing only single bonds
  • a monocyclic, bicyclic or tricyclic partially saturated heterocycle represents a ring system consisting of 1, 2 or 3 rings and comprising at least one heteroatom selected from O, N or S, and at least one double bond provided that the ring system is not an aromatic ring system
  • a monocyclic, bicyclic or tricyclic aromatic heterocycle represents an aromatic ring system consisting of 1, 2 or 3 rings and comprising at least one heteroatom selected from O, N or S.
  • monocyclic, bicyclic or tricyclic saturated carbocycles are cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, bicyclo[4,2,0]octanyl, cyclononanyl, cyclodecanyl, decahydronapthalenyl, tetradecahydroanthracenyl.
  • monocyclic, bicyclic or tricyclic partially saturated carbocycles are cyclopropenyl, cyclobutenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, cyclo-octenyl, bicyclo[4,2,0]octenyl, cyclononenyl, cyclodecenyl, octahydronaphthalenyl, 1,2,3,4-tetrahydronaphthalenyl, 1,2,3,4,4a,9,9a,10-octahydro-anthracenyl.
  • monocyclic, bicyclic or tricyclic aromatic carbocycles are phenyl, naphthalenyl, anthracenyl.
  • monocyclic, bicyclic or tricyclic saturated heterocycles are tetrahydrofuranyl, pyrrolidinyl, dioxolanyl, imidazolidinyl, thiazolidinyl, tetrahydrothienyl, dihydrooxazolyl, isothiazolidinyl, isoxazolidinyl, oxadiazolidinyl, triazolidinyl, thiadiazolidinyl, pyrazolidinyl, piperidinyl, hexahydropyrimidinyl, hexahydropyrazinyl, dioxanyl, morpholinyl, dithianyl, thiomorpholinyl, piperazinyl, trithianyl, decahydroquinolinyl, octahydroindolyl.
  • monocyclic, bicyclic or tricyclic partially saturated heterocycles are pyrrolinyl, imidazolinyl, pyrazolinyl, 2,3-dihydrobenzofuranyl, 1,3-benzodioxolyl, 2,3-dihydro-1,4-benzodioxinyl, indolinyl and the like.
  • monocyclic, bicyclic or tricyclic aromatic heterocycles are azetyl, oxetylidenyl, pyrrolyl, furyl, thienyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyrazolyl, triazolyl, thiadiazolyl, oxadiazolyl, tetrazolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, pyranyl, benzofuryl, isobenzofuryl, benzothienyl, isobenzothienyl, indolizinyl, indolyl, isoindolyl, benzoxazolyl, benzimidazolyl, indazolyl, benzisoxazolyl, benzisothiazolyl, benzopyrazolyl
  • 5-membered aromatic heterocycles are pyrrolyl, furyl, thienyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyrazolyl, triazolyl, thiadiazolyl, oxadiazolyl, tetrazolyl.
  • ( ⁇ O) forms a carbonyl moiety when attached to a carbon atom, a sulfoxide moiety when attached to a sulfur atom and a sulfonyl moiety when two of said terms are attached to a sulfur atom.
  • halo is generic to fluoro, chloro, bromo and iodo.
  • polyhalomethyl as a group or part of a group is defined as mono- or polyhalosubstituted methyl, in particular methyl with one or more fluoro atoms, for example, difluoromethyl or trifluoromethyl;
  • polyhaloC 1-6 alkyl as a group or part of a group is defined as mono- or polyhalosubstituted C 1-6 alkyl, for example, the groups defined in halomethyl, 1,1-difluoro-ethyl and the like.
  • more than one halogen atoms are attached to an alkyl group within the definition of polyhalomethyl or polyhaloC 1-6 alkyl, they may be the same or different.
  • heterocycle as in the definition of for instance R 4 , R 5 , R 6 , R 8 or R 15 is meant to include all the possible isomeric forms of the heterocycles, for instance, pyrrolyl also includes 2H-pyrrolyl.
  • the hereinabove-mentioned carbocycles may be attached to the remainder of the molecule of formula (I) or (I′) through any ring carbon as appropriate, if not otherwise specified.
  • the partially saturated bicyclic carbocycle is 1,2,3,4-tetrahydronaphthalenyl, it may be 1,2,3,4-tetrahydronaphthalen-1-yl, 1,2,3,4-tetrahydronaphthalen-2-yl and the like.
  • heterocycles may be attached to the remainder of the molecule of formula (I) or (I′) through any ring carbon or heteroatom as appropriate, if not otherwise specified.
  • aromatic monocyclic heterocycle is imidazolyl, it may be 1-imidazolyl, 2-imidazolyl, 4-imidazolyl and the like.
  • salts of the compounds of formula (I) or (I′) are those wherein the counterion is pharmaceutically acceptable.
  • salts of acids and bases which are non-pharmaceutically acceptable may also find use, for example, in the preparation or purification of a pharmaceutically acceptable compound. All salts, whether pharmaceutically acceptable or not are included within the ambit of the present invention.
  • the pharmaceutically acceptable addition salts as mentioned hereinabove are meant to comprise the therapeutically active non-toxic acid addition salt forms which the compounds of formula (I) or (I′) are able to form.
  • the latter can conveniently be obtained by treating the base form with such appropriate acids as inorganic acids, for example, hydrohalic acids, e.g.
  • hydrochloric, hydrobromic and the like sulfuric acid; nitric acid; phosphoric acid and the like; or organic acids, for example, acetic, propanoic, hydroxyacetic, 2-hydroxypropanoic, 2-oxopropanoic, oxalic, malonic, succinic, maleic, fumaric, malic, tartaric, 2-hydroxy-1,2,3-propanetricarboxylic, methanesulfonic, ethanesulfonic, benzenesulfonic, 4-methylbenzenesulfonic, cyclohexanesulfamic, 2-hydroxybenzoic, 4-amino-2-hydroxybenzoic and the like acids.
  • the salt form can be converted by treatment with alkali into the free base form.
  • the compounds of formula (I) or (I′) containing acidic protons may be converted into their therapeutically active non-toxic metal or amine addition salt forms by treatment with appropriate organic and inorganic bases.
  • Appropriate base salt forms comprise, for example, the ammonium salts, the alkali and earth alkaline metal salts, e.g. the lithium, sodium, potassium, magnesium, calcium salts and the like, salts with organic bases, e.g.
  • primary, secondary and tertiary aliphatic and aromatic amines such as methylamine, ethylamine, propylamine, isopropylamine, the four butylamine isomers, dimethylamine, diethylamine, diethanolamine, dipropylamine, diisopropylamine, di-n-butylamine, pyrrolidine, piperidine, morpholine, trimethylamine, triethylamine, tripropylamine, quinuclidine, pyridine, quinoline and isoquinoline, the benzathine, N-methyl-D-glucamine, 2-amino-2-(hydroxymethyl)-1,3-propanediol, hydrabamine salts, and salts with amino acids such as, for example, arginine, lysine and the like.
  • the salt form can be converted by treatment with acid into the free acid form.
  • addition salt also comprises the hydrates and solvent addition forms which the compounds of formula (I) or (I′) are able to form. Examples of such forms are e.g. hydrates, alcoholates and the like.
  • quaternary amine as used hereinbefore defines the quaternary ammonium salts which the compounds of formula (I) or (I′) are able to form by reaction between a basic nitrogen of a compound of formula (I) or (I′) and an appropriate quaternizing agent, such as, for example, an optionally substituted alkylhalide, arylhalide or arylalkylhalide, e.g. methyliodide or benzyliodide.
  • Other reactants with good leaving groups may also be used, such as alkyl trifluoromethanesulfonates, alkyl methanesulfonates, and alkyl p-toluenesulfonates.
  • a quaternary amine has a positively charged nitrogen.
  • Pharmaceutically acceptable counterions include chloro, bromo, iodo, trifluoroacetate and acetate. The counterion of choice can be introduced using ion exchange resins.
  • stereochemically isomeric forms as used hereinbefore defines all the possible stereoisomeric forms which the compounds of formula (I) or (I′), and their N-oxides, addition salts, quaternary amines or physiologically functional derivatives may possess.
  • chemical designation of compounds denotes the mixture of all possible stereochemically isomeric forms, said mixtures containing all diastereomers and enantiomers of the basic molecular structure as well as each of the individual isomeric forms of formula (I) or (I′) and their N-oxides, salts, solvates or quaternary amines substantially free, i.e.
  • stereogenic centers may have the R- or S-configuration; substituents on bivalent cyclic (partially) saturated radicals may have either the cis- or trans-configuration.
  • Compounds encompassing double bonds can have an E or Z-stereochemistry at said double bond.
  • Stereochemically isomeric forms of the compounds of formula (I) or (I′) are obviously intended to be embraced within the scope of this invention.
  • N-oxide forms of the present compounds are meant to comprise the compounds of formula (I) wherein one or several tertiary nitrogen atoms are oxidized to the so-called N-oxide.
  • Particular compounds are those compounds of formula (I) or (I′) as defined hereinabove provided that the molecular mass of the compounds is at most 1000 u, in particular at most 800 u, more in particular at most 700 u (u stands for unified atomic mass unit and equals 1.66 ⁇ 10 ⁇ 27 kg).
  • Particular compounds are also those compounds of formula (I) or (I′) as defined hereinabove provided that when R 3 is hydrogen then X is other than —C( ⁇ O)—NR 1 —or —C( ⁇ S)—NR 1 —; and provided that when X is a direct bond and R 2 is hydrogen than R 3 is other than R 7 —C( ⁇ O)— with R 7 representing amino or mono- or di(C 1-6 alkyl)amino; and provided that when X is a direct bond and R 2 is hydrogen than R 21 is other than a heterocycle; and
  • R 3 is hydrogen then R 2 is other than a heterocycle.
  • Particular interesting compounds are those compounds of formula (I) or (I′) as defined hereinabove, their N-oxides, pharmaceutically acceptable addition salts, quaternary amines and stereochemically isomeric forms thereof, wherein ring A is pyridyl, pyrimidinyl, pyrazinyl or pyridazinyl;
  • R 4 is 4-pyridyl substituted in position 3;
  • R 3a is hydrogen, halo, C 1-6 alkyloxy or C 1-6 alkyl;
  • R 3b is as defined above for R 3 ;
  • R 4 is 4-pyridyl substituted in position 3;
  • R 3a is hydrogen, halo, C 1-6 alkyloxy or C 1-6 alkyl;
  • X—R 2 is as defined above;
  • R 3a is halo, cyano, C 1-4 alkyloxy, polyhaloC 1-4 alkyloxy, C 1-4 alkylthio, C 1-4 alkyl-S( ⁇ O)—, C 1-4 alkyl-S( ⁇ O) 2 —, C 1-4 alkyl, polyhaloC 1-4 alkyl, C 1-4 alkyloxycarbonyl, mono-or di(C 1-4 alkyl)aminocarbonyl, aminocarbonyl, polyhaloC 1-4 alkylthio;
  • R 3b is hydrogen, halo, cyano, nitro, C 1-4 alkyl, C 1-4 alkyloxy, polyhaloC 1-4 alkyl, C 1-4 alkyloxycarbonyl, C 1-4 alkylcarbonyl;
  • R 3c is hydrogen, halo or C 1-4 alkyl;
  • R 4 is 2-furanyl, 2-thienyl or 3-thienyl;
  • R 4 is pyridyl, pyrimidinyl, thiazolyl, pyrazinyl, pyridazinyl, or imidazolyl, each of said rings optionally substituted with one or more substituents selected from halo, cyano, aminocarbonyl, —C( ⁇ O)—O—R 4 ′, —C( ⁇ O)—R 4 ′, —S( ⁇ O) 2 —NR 4 ′R 4 ′′, NR 4 ′R 4 ′′, —O—R 4 ′ or C 1-6 alkyl optionally substituted with fluoro wherein R 4′ and R 4′′ each independently represent hydrogen or C 1-6 alkyl optionally substituted with mono- or di(C 1-6 alkyl)amino; R 1 , R 3 and s are as defined hereinabove;
  • R 4 is 2-pyridyl, 3-pyridyl, 4-pyridyl, 2-methyl-3-pyridyl, 6-methyl-3-pyridyl, 2-furanyl, 5-methyl-2-furanyl, 2,5-dimethyl-3-furanyl, 2-thienyl, 3-thienyl, 5-methyl-2-thienyl, 2-pheno-thiazinyl, 2-pyrazinyl, 2-benzofuranyl, 2-pyridyl-N-oxide, 3-pyridyl-N-oxide, 4-pyridyl-N-oxide, 1H-indol-2-yl, 1H-indol-3-yl, 1-methyl-1H-pyrrol-2-yl, 4-quinolinyl, 4-pyridyl methyl iodide, dimethylaminophenyl; R 1 is hydrogen or C 1-3 alkyl; s is 1 to 3; X, R 2 and R 3 are as defined hereinabove.
  • R 4 is 4-pyrazinyl, 1-methyl-1H-pyrrolyl, pyridyl optionally substituted with C 1-6 alkyl, pyridyl N-oxide optionally substituted with C 1-6 alkyl;
  • X is —O—, —NR 1 —C( ⁇ O)—O—, —NR 1 —C( ⁇ O)—, —NR 1 —C( ⁇ S)—, —NR 1 —C( ⁇ O)—NR 1 —, —NR 1 —C( ⁇ S)—NR 1 —or a direct bond;
  • R 2 is fluoro-substituted C 1-10 alkyl, optionally substituted phenyl or naphthyl, optionally substituted phenylC 1-6 alkyl, a monocyclic, bicyclic or tricyclic saturated carbocycle consisting of from 3 to 10 carbon atoms, a monocyclic, bicyclic or tricyclic partially saturated carbocycle consisting of from 3 to
  • Also preferred compounds are those compounds of formula (I) or (I′) wherein ring A is pyridyl, pyrimidinyl or pyridazinyl, in particular pyrimidinyl or pyridazinyl.
  • ring A is pyridyl, pyrimidinyl or pyridazinyl; in particular pyrimidinyl or pyridazinyl;
  • Still other preferred compounds are those compounds of formula (I) or (I′) wherein ring A is pyridyl, pyrimidinyl or pyridazinyl; in particular pyrimidinyl or pyridazinyl;
  • (b) s is 1 and said R 3 substituent is placed at the para position of the NR 1 linker and is other than C 1-6 alkyloxy or polyhaloC 1-6 alkyloxy;
  • X is other than a direct bond or C 1-6 alkyl
  • X—R 2 is other than hydroxy, C 1-6 alkyl, C 1-6 alkyloxy, trihalomethyl,
  • R 4 is an optionally substituted 5-membered heterocycle with at least 2 nitrogen atoms
  • R 2 is other than hydrogen, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, and X is other than O,
  • R 2 is other than hydrogen.
  • X is other than a direct bond or C 1-6 alkyl
  • R 2 is other than hydrogen, trifluoromethyl or C 1-4 alkyl
  • X—R 2 is other than hydroxy, C 1-6 alkyl, C 1-6 alkyloxy, trihalomethyl,
  • R 4 is an optionally substituted 5-membered heterocycle.
  • R 4 is an optionally substituted 5-membered heterocycle, in particular an optionally substituted imidazolyl or an optionally substituted triazolyl and/or wherein Z is a direct bond.
  • Particular preferred compounds of formula (I) or (I′) are selected from N 2 -(1H-indazol-5-yl)-N 4 -(2,4,6-trimethylphenyl)-2,4-pyrimidinediamine; 4-[[4-(1-methyl-1H-imidazol-2-yl)-2-pyrimidinyl]amino]-2-(phenylmethoxy)-benzonitrile; 4-[[4-(1-methyl-1H-imidazol-2-yl)-2-pyrimidinyl]amino]-benzonitrile; a N-oxide, a pharmaceutically acceptable addition salt, a quaternary amine and a stereochemically isomeric form thereof.
  • Compounds of formula (I) can be prepared by reacting an intermediate of formula (II) with an intermediate of formula (III) wherein W 1 represents a suitable leaving group, such as for example a halo atom, e.g. chloro, bromo and the like, in the presence of a suitable solvent, such as for example N N-dimethylacetamide, acetonitrile, tetrahydrofuran, water, an alcohol, e.g. methanol, ethanol, isopropanol and the like, and optionally in the presence of a suitable acid, such as for example hydrochloric acid and the like.
  • a suitable solvent such as for example N N-dimethylacetamide, acetonitrile, tetrahydrofuran
  • water an alcohol, e.g. methanol, ethanol, isopropanol and the like
  • a suitable acid such as for example hydrochloric acid and the like.
  • the above reaction may also be performed in the presence of a suitable solvent, such as for example toluene, a suitable catalyst, such as tris (dibenzylidene aceton)dipalladium (0), a suitable ligand such as for example 2,2-bis(diphenylphosphino)-1,1′-binaphthyl, and a suitable base, such as for example sodium tert.butoxide.
  • a suitable solvent such as for example toluene
  • a suitable catalyst such as tris (dibenzylidene aceton)dipalladium (0)
  • a suitable ligand such as for example 2,2-bis(diphenylphosphino)-1,1′-binaphthyl
  • a suitable base such as for example sodium tert.butoxide.
  • Compounds of formula (I) can also be prepared by reacting an intermediate of formula (IV) wherein W 2 represents a suitable leaving group, such as for example a halo atom, e.g. chloro and the like, with an intermediate of formula (V) in the presence of a suitable solvent, such as for example toluene, a suitable catalyst, such as tris (dibenzylidene aceton)dipalladium (0), a suitable ligand such as for example 2,2-bis(diphenylphosphino)-1,1′-binaphthyl, and a suitable base, such as for example sodium tert.butoxide.
  • a suitable solvent such as for example toluene
  • a suitable catalyst such as tris (dibenzylidene aceton)dipalladium (0)
  • a suitable ligand such as for example 2,2-bis(diphenylphosphino)-1,1′-binaphthyl
  • a suitable base
  • Compounds of formula (I) may also be prepared by reacting an intermediate of formula (VI), wherein W 3 represents a suitable leaving group, such as a halo atom, e.g. chloro and the like, with an intermediate of formula (VII) in the presence of a suitable solvent, such as 1,4-dioxane or an alcohol, e.g. methanol, ethanol, isopropanol and the like, or water, optionally in the presence of a suitable acid, such as hydrochloric acid and the like, or a suitable base, such as for example N,N-diisopropylethanamine.
  • a suitable solvent such as 1,4-dioxane or an alcohol, e.g. methanol, ethanol, isopropanol and the like
  • a suitable acid such as hydrochloric acid and the like
  • a suitable base such as for example N,N-diisopropylethanamine.
  • Compounds of formula (I) wherein Z is C( ⁇ O), said compounds being represented by formula (I-a), may be prepared by reacting an intermediate of formula (VIII), wherein W 4 represents a suitable leaving group, such as a halo atom, e.g. chloro and the like, or an alcoholate, such as methanolate, ethanolate and the like, with an intermediate of formula (IX) in the presence of a suitable solvent, such as for example an alcohol, e.g. methanol, ethanol and the like.
  • a suitable solvent such as for example an alcohol, e.g. methanol, ethanol and the like.
  • Compounds of formula (I) wherein Z is a direct bond can be prepared by reacting an intermediate of formula (VI) with an intermediate of formula (X) in the presence of a suitable catalyst, such as for example palladium tetrakis(triphenylphosphine), a suitable base, such as for example disodium carbonate, and a suitable solvent, such as for example acetonitrile and water.
  • a suitable catalyst such as for example palladium tetrakis(triphenylphosphine
  • a suitable base such as for example disodium carbonate
  • a suitable solvent such as for example acetonitrile and water.
  • Compounds of formula (I) wherein Z is a direct bond and R 4 represents 5-tetrazolyl, said compounds being represented by formula (I-c), can be prepared by reacting an intermediate of formula (XI) with sodium azide in the presence of a suitable salt, such as for example N,N-diethylethanamine hydrochloric acid salt, and a suitable solvent, such as for example 1-methyl-2-pyrrolidinone.
  • a suitable salt such as for example N,N-diethylethanamine hydrochloric acid salt
  • a suitable solvent such as for example 1-methyl-2-pyrrolidinone.
  • Compounds of formula (I) wherein Z is a direct bond and ring A is pyrimidinyl with the NR 1 linker placed in position 2, said compounds being represented by formula (I-d), may be prepared by reacting an intermediate of formula (XX) with an intermediate of formula (XXI) in the presence of a suitable solvent, such as for example N,N-dimethylacetamide and a suitable base, such as for example sodium ethanolate.
  • a suitable solvent such as for example N,N-dimethylacetamide
  • a suitable base such as for example sodium ethanolate.
  • R 4 in a compound of formula (I-d) represents a heterocycle substituted with amino are aminocarbonyl
  • R 4 in an intermediate of formula (XXI) may represent a heterocycle substituted with —N ⁇ CH—N(CU 3 ) 2 or —C( ⁇ O)—N ⁇ CH—N(CH 3 ) 2 .
  • reaction products may be isolated from the reaction medium and, if necessary, further purified according to methodologies generally known in the art such as, for example, extraction, crystallization, distillation, trituration and chromatography.
  • the compounds of formula (I) may further be prepared by converting compounds of formula (I) into each other according to art-known group transformation reactions.
  • the compounds of formula (I) may be converted to the corresponding N-oxide forms following art-known procedures for converting a trivalent nitrogen into its N-oxide form.
  • Said N-oxidation reaction may generally be carried out by reacting the starting material of formula (I) with an appropriate organic or inorganic peroxide.
  • Appropriate inorganic peroxides comprise, for example, hydrogen peroxide, alkali metal or earth alkaline metal peroxides, e.g. sodium peroxide, potassium peroxide;
  • appropriate organic peroxides may comprise peroxy acids such as, for example, benzenecarboperoxoic acid or halo substituted benzenecarboperoxoic acid, e.g.
  • 3-chlorobenzenecarbo-peroxoic acid peroxoalkanoic acids, e.g. peroxoacetic acid, alkylhydroperoxides, e.g. t.butyl hydro-peroxide.
  • Suitable solvents are, for example, water, lower alcohols, e.g. ethanol and the like, hydrocarbons, e.g. toluene, ketones, e.g. 2-butanone, halogenated hydrocarbons, e.g. dichloromethane, and mixtures of such solvents.
  • Compounds of formula (I) wherein R 3 is halo, or wherein R 2 is substituted with halo can be converted into a compound of formula (I) wherein R 3 is cyano, or wherein R 2 is substituted with cyano, by reaction with a suitable cyano-introducing agent, such as sodium cyanide or CuCN, optionally in the presence of a suitable catalyst, such as for example tetrakis(triphenylphosphine)palladium and a suitable solvent, such as N,N-dimethylacetamide or N,N-dimethylformamide.
  • a suitable cyano-introducing agent such as sodium cyanide or CuCN
  • a suitable catalyst such as for example tetrakis(triphenylphosphine)palladium
  • a suitable solvent such as N,N-dimethylacetamide or N,N-dimethylformamide.
  • a compound of formula (I) wherein R 3 is cyano, or wherein R 2 is substituted with cyano can further be converted into a compound of formula (I) wherein R 3 is aminocarbonyl, or wherein R 1 is substituted with aminocarbonyl, by reaction with HCOOH, in the presence of a suitable acid, such as hydrochloric acid.
  • a compound of formula (I) wherein R 3 is cyano, or wherein R 2 is substituted with cyano can also further be converted into a compound of formula (I) wherein R 3 is tetrazolyl, or wherein R 2 is substituted with tetrazolyl, by reaction with sodium azide in the presence of ammonium chloride and N,N-dimethylacetoacetamide.
  • Compounds of formula (I) wherein —X—R 2 is —O—CH 2 — (optionally substituted)phenyl may be converted into a compound of formula (I) wherein —X—R 2 represents OH, by reaction with a suitable reducing agent, such as H 2 , in the presence of a suitable catalyst, such as for example palladium on charcoal, and a suitable solvent, such as for example an alcohol, e.g. methanol, ethanol and the like, or N,N-dimethylacetamide.
  • a suitable reducing agent such as H 2
  • a suitable catalyst such as for example palladium on charcoal
  • a suitable solvent such as for example an alcohol, e.g. methanol, ethanol and the like, or N,N-dimethylacetamide.
  • —O—X 1 represents those linkers falling under the definition of X which are attached to the phenyl ring via a O atom (in said definition X 1 represents that part of the linker wherein the O atom is not included), in the presence of a suitable base, such as for example dipotassium carbonate, and a suitable solvent, such as for example N,N-dimethylacetamide.
  • a suitable base such as for example dipotassium carbonate
  • a suitable solvent such as for example N,N-dimethylacetamide.
  • Compounds of formula (I) wherein R 3 is nitro, or wherein R 2 is substituted with nitro may be converted into a compound of formula (I) wherein R 3 is amino or wherein R 2 is substituted with amino, by reaction with a suitable reducing agent, such as for example H 2 , in the presence of a suitable catalyst, such as for example palladium on charcoal, a suitable catalyst poison, such as for example a thiophene solution, and a suitable solvent, such as for example an alcohol, e.g. methanol, ethanol and the like.
  • a suitable reducing agent such as for example H 2
  • a suitable catalyst poison such as for example a thiophene solution
  • a suitable solvent such as for example an alcohol, e.g. methanol, ethanol and the like.
  • Some of the compounds of formula (I) and some of the intermediates in the present invention may contain an asymmetric carbon atom.
  • Pure stereochemically isomeric forms of said compounds and said intermediates can be obtained by the application of art-known procedures.
  • diastereoisomers can be separated by physical methods such as selective crystallization or chromatographic techniques, e.g. counter current distribution, liquid chromatography and the like methods.
  • Enantiomers can be obtained from racemic mixtures by first converting said racemic mixtures with suitable resolving agents such as, for example, chiral acids, to mixtures of diastereomeric salts or compounds; then physically separating said mixtures of diastereomeric salts or compounds by, for example, selective crystallization or chromatographic techniques, e.g.
  • Intermediates of formula (II) wherein R 1 is hydrogen, said intermediates being represented by formula (II-a), can be prepared by reducing an intermediate of formula (XII) in the presence of a suitable reducing agent, such as for example H 2 , a suitable catalyst, such as for example palladium on charcoal, a suitable catalyst poison, such as for example a thiophene solution, and a suitable solvent, such as for example tetrahydrofuran or an alcohol, e.g. methanol, ethanol and the like.
  • a suitable reducing agent such as for example H 2
  • a suitable catalyst such as for example palladium on charcoal
  • a suitable catalyst poison such as for example a thiophene solution
  • a suitable solvent such as for example tetrahydrofuran or an alcohol, e.g. methanol, ethanol and the like.
  • Intermediates of formula (III) can be prepared by reacting an intermediate of formula (XIII) wherein W 1 is as defined hereinabove, with an intermediate of formula (XIV) in the presence of a suitable solvent, such as for example acetonitrile or dioxane, and optionally in the presence of a suitable base, such as for example N,N-diisopropylethanamine.
  • a suitable solvent such as for example acetonitrile or dioxane
  • a suitable base such as for example N,N-diisopropylethanamine.
  • Intermediates of formula (IV) can be prepared by reacting an intermediate of formula (XV) wherein W 2 is as defined hereinabove, with an intermediate of formula (XVI) wherein W 2 is as defined hereinabove.
  • Intermediates of formula (XVI) can be prepared by reacting an intermediate of formula (XVII) with a leaving group introducing agent of formula (XVIII) wherein W 2 represents the leaving group and R represents the remaining of the leaving group introducing agent, such as for example POCl 3 .
  • Intermediates of formula (VI) can be prepared by reacting an intermediate of formula (XIX) wherein W 3 is as defined hereinabove, with an intermediate of formula (III) in the presence of a suitable solvent, such as for example an alcohol, e.g. methanol, ethanol, isopropanol and the like, and a suitable acid, such as for example hydrochloric acid.
  • a suitable solvent such as for example an alcohol, e.g. methanol, ethanol, isopropanol and the like
  • a suitable acid such as for example hydrochloric acid.
  • Intermediates of formula (VIII) wherein ring A is pyrimidinyl with the NR 1 linker in position 2 and W 4 represents an alcoholate, i.e. C 1-6 alkylO—, said intermediates being represented by formula (VIII-a), may be prepared by reacting an intermediate of formula (XX) with an intermediate of formula (XXII) in the presence of a suitable solvent, such as for example N,N-dimethylacetamide.
  • Intermediates of formula (XX) can be prepared by reacting an intermediate of formula (V) with cyanamide in the presence of a suitable solvent, such as for example diglyme.
  • the compounds of formula (I) or (I′) inhibit Glycogen synthase kinase 3 (GSK3), in particular glycogen synthase kinase 3 beta (GSK3 ⁇ ). They are selective Glycogen synthase kinase 3 inhibitors. Specific inhibitory compounds are superior therapeutic agents since they are characterized by a greater efficacy and lower toxicity by virtue of their specificity.
  • GSK3 tau protein kinase I
  • FA Factor A
  • GSK3 tau protein kinase I
  • ACLK ATP-citrate lysase kinase
  • Glycogen synthase kinase 3 (GSK3), which exists in two isoforms, i.e. GSK3 ⁇ and GSK3 ⁇ , is a proline-directed serine/threonine kinase originally identified as an enzyme that phosphorylates glycogen synthase.
  • GSK3 phosphorylates numerous proteins in vitro such as glycogen synthase, phosphatase inhibitor I-2, the type-II subunit of cAMP-dependent protein kinase, the G-subunit of phosphatase-1, ATP-citrate lyase, acetyl coenzyme A carboxylase, myelin basic protein, a microtubule-associated protein, a neurofilament protein, an N-CAM cell adhesion molecule, nerve growth factor receptor, c-Jun transcription factor, JunD transcription factor, c-Myb transcription factor, c-Myc transcription factor, L-Myc transcription factor, adenomatous polyposis coli tumor supressor protein, tau protein and ⁇ -catenin.
  • proteins in vitro such as glycogen synthase, phosphatase inhibitor I-2, the type-II subunit of cAMP-dependent protein kinase, the G-subunit of phosphatase-1, ATP-cit
  • GSK3 inhibitors may therefore be useful in the prevention or treatment of diseases mediated through GSK3 activity such as bipolar disorder (in particular manic depression), diabetes, Alzheimer's disease, leukopenia, FTDP-17 (Fronto-temporal dementia associated with Parkinson's disease), cortico-basal degeneration, progressive supranuclear palsy, multiple system atrophy, Pick's disease, Niemann Pick's disease type C, Dementia Pugilistica, dementia with tangles only, dementia with tangles and calcification, Down syndrome, myotonic dystrophy, Parkinsonism-dementia complex of Guam, aids related dementia, Postencephalic Parkinsonism, prion diseases with tangles, subacute sclerosing panencephalitis, frontal lobe degeneration (FLD), argyrophilic grains disease, subacute sclerotizing panencephalitis (SSPE) (late complication of viral infections in the central nervous system), inflammatory diseases, cancer, dermatological disorders such
  • the compounds of the present invention are useful in the prevention or treatment of Alzheimer's disease, diabetes, especially type 2 diabetes (non insulin dependent diabetes).
  • the major neuropathological landmarks in Alzheimer's disease are neuronal loss, the deposition of amyloid fibers and paired helical filaments (PHF) or neurofibrillary tangles (NFT). Tangle formation appears to be the consequence of accumulation of aberrantly phosphorylated tau protein. This aberrant phosphorylation destabilizes neuronal cytoskeleton, which leads to reduced axonal transport, deficient functioning and ultimately neuronal death. The density of neurofibrillary tangles has been shown to parallel duration and severity of Alzheimer's disease. Reduction of the degree of tau phosphorylation can provide for neuroprotection and can prevent or treat Alzheimer's disease or can slow the progression of the disease. As mentioned hereinabove, GSK3 phosphorylates tau protein. Thus compounds having an inhibitory activity for GSK3 may be useful for the prevention or the treatment of Alzheimer's disease.
  • the rate-limiting step in the glycogen synthesis is catalyzed by the enzym glycogen synthase. It is believed that glycogen synthase is inhibited by phosphorylation and that insulin stimulates glycogen synthase by causing a net decrease in the phosphorylation of this enzym.
  • insulin in order to activate glycogen synthase, insulin must either activate phosphatases or inhibit kinases, or both.
  • glycogen synthase is a substrate for glycogen synthase kinase 3 and that insulin inactivates GSK3 thereby promoting the dephosphorylation of glycogen synthase.
  • GSK3 may also play a role in insulin resistance. It is believed that GSK3 dependent Insulin Receptor Substrate-1 phosphorylation contributes to insulin resistance.
  • GSK3 inhibition may result in the increased deposition of glycogen and a concomitant reduction of blood glucose, thus mimicing the hypoglycemic effect of insulin.
  • GSK3 inhibition provides an alternative therapy to manage insulin resistance commonly observed in non insulin dependent diabetes mellitus and obesity.
  • GSK3 inhibitors may thus provide a novel modality for the treatment of type 1 and type 2 diabetes.
  • GSK3 inhibitors in particular GSK3 ⁇ inhibitors, may also be indicated for use in the prevention or the treatment of pain, in particular neuropathic pain.
  • GSK in particular GSK3 ⁇ , has been shown to be involved in the initiation of the apoptotic cascade and trophic factor withdrawal stimulates the GSK3 ⁇ apoptosis pathway.
  • GSK3 ⁇ inhibitors might reduce signals of and even prevent levels of neuropathic pain.
  • GSK3 inhibitory properties are useful to prevent or treat GSK3 mediated diseases, in particular GSK3 ⁇ mediated diseases, such as bipolar disorder (in particular manic depression), diabetes, Alzheimer's disease, leukopenia, FTDP-17 (Fronto-temporal dementia associated with Parkinson's disease), cortico-basal degeneration, progressive supranuclear palsy, multiple system atrophy, Pick's disease, Niemann Pick's disease type C, Dementia Pugilistica, dementia with tangles only, dementia with tangles and calcification, Down syndrome, myotonic dystrophy, Parkinsonism-dementia complex of Guam, aids related dementia, Postencephalic Parkinsonism, prion diseases with tangles, subacute sclerosing panencepha
  • the present compounds are also useful as male contraceptives.
  • the compounds of the present invention may be useful in the treatment of warm-blooded animals suffering from disease mediated through GSK3, in particular GSK3 ⁇ , or they may be useful to prevent warm-blooded animals to suffer from disease mediated through GSK3, in particular GSK3 ⁇ . More in particular, the compounds of the present invention may be useful in the treatment of warm-blooded animals suffering from Alzheimer's disease, diabetes, especially type 2 diabetes, cancer, inflammatory diseases or bipolar disorder.
  • the compounds of formula (I) or any subgroup thereof, their N-oxides, pharmaceutically acceptable addition salts, quaternary amines and stereochemically isomeric forms may be used as a medicine.
  • the present compounds can be used for the manufacture of a medicament for treating or preventing diseases mediated through GSK3, in particular GSK3 ⁇ . More in particular, the present compounds can be used for the manufacture of a medicament for treating or preventing Alzheimer's disease, diabetes, especially type 2 diabetes, cancer, inflammatory diseases or bipolar disorder.
  • a method of treating warm-blooded animals, including humans, suffering from or a method of preventing warm-blooded animals, including humans, to suffer from diseases mediated through GSK3, in particular GSK3 ⁇ , more in particular a method of treating or preventing Alzheimer's disease, diabetes, especially type 2 diabetes, cancer, inflammatory diseases or bipolar disorder comprises the administration, preferably oral administration, of an effective amount of a compound of formula (I) or (I′), a N-oxide form, a pharmaceutically acceptable addition salt, a quaternary amine or a possible stereoisomeric form thereof, to warm-blooded animals, including humans.
  • the present invention also provides compositions for preventing or treating diseases mediated through GSK3, in particular GSK3 ⁇ , comprising a therapeutically effective amount of a compound of formula (I) or (I′) and a pharmaceutically acceptable carrier or diluent.
  • compositions of the present invention may be formulated into various pharmaceutical forms for administration purposes.
  • compositions there may be cited all compositions usually employed for systemically administering drugs.
  • an effective amount of the particular compound, optionally in addition salt form, as the active ingredient is combined in intimate admixture with a pharmaceutically acceptable carrier, which carrier may take a wide variety of forms depending on the form of preparation desired for administration.
  • a pharmaceutically acceptable carrier which carrier may take a wide variety of forms depending on the form of preparation desired for administration.
  • These pharmaceutical compositions are desirable in unitary dosage form suitable, particularly, for administration orally, rectally, percutaneously, or by parenteral injection.
  • any of the usual pharmaceutical media may be employed such as, for example, water, glycols, oils, alcohols and the like in the case of oral liquid preparations such as suspensions, syrups, elixirs, emulsions and solutions; or solid carriers such as starches, sugars, kaolin, diluents, lubricants, binders, disintegrating agents and the like in the case of powders, pills, capsules, and tablets. Because of their ease in administration, tablets and capsules represent the most advantageous oral dosage unit forms, in which case solid pharmaceutical carriers are obviously employed.
  • the carrier will usually comprise sterile water, at least in large part, though other ingredients, for example, to aid solubility, may be included.
  • injectable solutions for example, may be prepared in which the carrier comprises saline solution, glucose solution or a mixture of saline and glucose solution.
  • injectable suspensions may also be prepared in which case appropriate liquid carriers, suspending agents and the like may be employed.
  • solid form preparations which are intended to be converted, shortly before use, to liquid form preparations.
  • the carrier optionally comprises a penetration enhancing agent and/or a suitable wetting agent, optionally combined with suitable additives of any nature in minor proportions, which additives do not introduce a significant deleterious effect on the skin.
  • Said additives may facilitate the administration to the skin and/or may be helpful for preparing the desired compositions.
  • These compositions may be administered in various ways, e.g., as a transdermal patch, as a spot-on, as an ointment.
  • the compounds of the present invention may also be administered via inhalation or insufflation by means of methods and formulations employed in the art for administration via this way.
  • the compounds of the present invention may be administered to the lungs in the form of a solution, a suspension or a dry powder. Any system developed for the delivery of solutions, suspensions or dry powders via oral or nasal inhalation or insufflation are suitable for the administration of the present compounds.
  • Unit dosage form refers to physically discrete units suitable as unitary dosages, each unit containing a predetermined quantity of active ingredient calculated to produce the desired therapeutic effect in association with the required pharmaceutical carrier.
  • unit dosage forms are tablets (including scored or coated tablets), capsules, pills, powder packets, wafers, suppositories, injectable solutions or suspensions and the like, and segregated multiples thereof.
  • the present compounds are orally active compounds, and are preferably orally administered.
  • the exact dosage, the therapeutically effective amount and frequency of administration depends on the particular compound of formula (I) or (I′) used, the particular condition being treated, the severity of the condition being treated, the age, weight, sex, extent of disorder and general physical condition of the particular patient as well as other medication the individual may be taking, as is well known to those skilled in the art. Furthermore, it is evident that said effective daily amount may be lowered or increased depending on the response of the treated subject and/or depending on the evaluation of the physician prescribing the compounds of the instant invention.
  • the compounds of formula (I) or (I′) may be used in combination with other conventional drugs used to combat Alzheimer's disease, such as galantamine, donepezil, rivastigmine or tacrine.
  • the present invention also relates to the combination of a compound of formula (I) or (I′) and another agent capable of preventing or treating Alzheimer's disease. Said combination may be used as a medicine.
  • the present invention also relates to a product containing (a) a compound of formula (I) or (I′), and (b) another agent capable of preventing or treating Alzheimer's disease, as a combined preparation for simultaneous, separate or sequential use in the prevention or treatment of Alzheimer's disease.
  • the different drugs may be combined in a single preparation together with pharmaceutically acceptable carriers.
  • the compounds of formula (I) or (I′) may be used in combination with other conventional drugs used to combat type 2 diabetes, such as glibenclamide, chlorpropamide, gliclazide, glipizide, gliquidon, tolbutamide, metformin, acarbose, miglitol, nateglinide, repaglinide, acetohexamide, glimepiride, glyburide, tolazamide, troglitazone, rosiglitazone, pioglitazone, isaglitazone.
  • other conventional drugs used to combat type 2 diabetes such as glibenclamide, chlorpropamide, gliclazide, glipizide, gliquidon, tolbutamide, metformin, acarbose, miglitol, nateglinide, repaglinide, acetohexamide, glimepiride, glyburide, tolazamide, troglitazone, rosi
  • the present invention also relates to the combination of a compound of formula (I) or (I′) and another agent capable of preventing or treating type 2 diabetes. Said combination may be used as a medicine.
  • the present invention also relates to a product containing (a) a compound of formula (I) or (I′), and (b) another agent capable of preventing or treating type 2 diabetes, as a combined preparation for simultaneous, separate or sequential use in the prevention or treatment of type 2 diabetes.
  • the different drugs may be combined in a single preparation together with pharmaceutically acceptable carriers.
  • the compounds of formula (I) or (I′) may be used in combination with other conventional drugs used to combat cancer such as platinum coordination compounds for example cisplatin or carboplatin; taxane compounds for example paclitaxel or docetaxel; camptothecin compounds for example irinotecan or topotecan; anti-tumour vinca alkaloids for example vinblastine, vincristine or vinorelbine; anti-tumour nucleoside derivatives for example 5-fluorouracil, gemcitabine or capecitabine; nitrogen mustard or nitrosourea alkylating agents for example cyclophosphamide, chlorambucil, carmustine or lomustine; anti-tumour anthracycline derivatives for example daunorubicin, doxorubicin or idarubicin; HER2 antibodies for example trastzumab; and anti-tumour podophyllotoxin derivatives for example etop
  • the present invention also relates to the combination of a compound of formula (I) or (I′) and another agent capable of preventing or treating cancer. Said combination may be used as a medicine.
  • the present invention also relates to a product containing (a) a compound of formula (I) or (I′), and (b) another agent capable of preventing or treating cancer, as a combined preparation for simultaneous, separate or sequential use in the prevention or treatment of cancer.
  • the different drugs may be combined in a single preparation together with pharmaceutically acceptable carriers.
  • the compounds of formula (I) or (I′) may be used in combination with other conventional drugs used to combat bipolar disorder such as atypical antipsychotics, anti-epileptica, benzodiazepines, lithium salts, for example olanzapine, risperidone, carbamazepine, valproate, topiramate.
  • other conventional drugs used to combat bipolar disorder such as atypical antipsychotics, anti-epileptica, benzodiazepines, lithium salts, for example olanzapine, risperidone, carbamazepine, valproate, topiramate.
  • the present invention also relates to the combination of a compound of formula (I) or (I′) and another agent capable of preventing or treating bipolar disorder. Said combination may be used as a medicine.
  • the present invention also relates to a product containing (a) a compound of formula (I) or (I′), and (b) another agent capable of preventing or treating bipolar disorder, as a combined preparation for simultaneous, separate or sequential use in the prevention or treatment of bipolar disorder.
  • the different drugs may be combined in a single preparation together with pharmaceutically acceptable carriers.
  • the compounds of formula (I) or (I′) may be used in combination with other conventional drugs used to combat inflammatory diseases such as steroids, cyclooxygenase-2 inhibitors, non-steroidal-anti-inflammatory drugs, TNF- ⁇ antibodies, such as for example acetyl salicylic acid, bufexamac, diclofenac potassium, sulindac, diclofenac sodium, ketorolac trometamol, tolmetine, ibuprofen, naproxen, naproxen sodium, tiaprofen acid, flurbiprofen, mefenamic acid, nifluminic acid, meclofenamate, indomethacin, proglumetacine, ketoprofen, nabumetone, paracetamol, piroxicam, tenoxicam, nimesulide, fenylbutazon, tramadol, beclomethasone dipropionate, betamet
  • the present invention also relates to the combination of a compound of formula (I) or (I′) and another agent capable of preventing or treating inflammatory diseases. Said combination may be used as a medicine.
  • the present invention also relates to a product containing (a) a compound of formula (I) or (I′), and (b) another agent capable of preventing or treating inflammatory diseases, as a combined preparation for simultaneous, separate or sequential use in the prevention or treatment of inflammatory disorders.
  • the different drugs may be combined in a single preparation together with pharmaceutically acceptable carriers.
  • DIPE diisopropyl ether
  • DMA diisopropyl ether
  • DMF N,N-dimethylformamide
  • intermediate 3 (0.00477 mol) in DMA (30 ml) was stirred for 1 hour at room temperature and overnight at 100° C. This mixture was again stirred at 100° C. for 24 hours and then cooled to room temperature. The residue was poured out in a saturated NaCl-solution (300 ml), filtered and washed with H 2 O. The precipitate was dissolved in 2-propanone and this solution was concentrated in vacuum. The obtained solid was crystallized from EtOH, filtered and dried at 40° C. under vacuum, yielding 0.64 g (35.8%) of intermediate 6.
  • Tables 1 to 4 list the compounds of formula (I) which were prepared according to one above examples.
  • the pharmacological activity of the present compounds was examined using the following test.
  • GSK3beta assays were performed at 25° C. in a 100 ⁇ l reaction volume of 25 mM Tris (pH 7.4) containing 10 mM MgCl 2 , 1 mM DTT, 0.1 mg/ml BSA, 5% glycerol and containing 19 nM GSK3 ⁇ , 5 ⁇ M biotinylated phosphorylated CREB peptide, 1 ⁇ M ATP, 2 nM ATP-P 33 and a suitable amount of a test compound of formula (I) or (I′). After one hour, the reaction was terminated by adding 70 ⁇ l of Stop mix (1 mM ATP, 18 mg/ml streptavidin coated PVT SPA bead pH 11.0).
  • the beads to which the phosphorylated CREB peptide is attached were allowed to settle for 30 minutes and the radioactivity of the beads was counted in a microtiterplate scintillation counter and compared with the results obtained in a control experiment (without the presence of a test compound) in order to determine the percentage of GSK3 ⁇ , inhibition.
  • the IC 50 value i.e. the concentration (M) of the test compound at which 50% of GSK3, is inhibited, was calculated from the dose response curve obtained by performing the above-described GSK3 ⁇ assay in the presence of different amounts of the test compound.
  • Table 5 lists pIC 50 values (-log IC 50 (M)) obtained in the above-described test for the present compounds.

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CA2463822A1 (en) 2003-05-08
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US20050004125A1 (en) 2005-01-06
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